Stock for a firearm



FIG. 1 is a top, front, left perspective view of a stock for a firearm showing the new design.

FIG. 2 is a left view thereof.

FIG. 3 is a back view thereof.

FIG. 4 is a right view thereof.

FIG. 5 is a front view thereof.

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The unclaimed broken lines immediately adjacent to the shaded area represent the boundaries of the design. 

CLAIM The ornamental design for stock for a firearm, as shown and described. 